Yes, Tellie is your man. He's a Spectra rep. In the meantime, a few questions:
Is the boat now back in the water, or still on the hard
? (So it can get salt
Is the watermaker
on flush cycle when you do this?
Are you using the electronic MPC control panel
, or doing it manually at the watermaker
Is the cock from your water tanks
open, so that it can pull water from the tank?
Is the valve from the seawater seacock to your prefilters open?
Are your prefilters getting water (I'm assuming you have clear filter canisters so you can see the water)?
If the boat is in the water, have you tried first making water before going to the flush?